Chemically anchored liquid-PEO based block copolymer electrolytes for solid-state lithium-ion batteries
(2014) Journal of Materials Chemistry A — Vol. 2, n° 30, p. 11839-11846 (2014)
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- Abstract
- Solid-state electrolytes are being considered the keystone element for the development of safer all-solid-state lithium-ion batteries. While poly(ethylene oxide) (PEO) solid-state polymer electrolytes are known to support a Li + flux, satisfying conductivities are reached only above the melting point of the PEO crystallites (>65 °C) rendering PEO unpractical. Herein, by means of block-copolymer engineering, we design a mechanically clamped liquid-PEO electrolyte that combines the high ionic conductivity of a low molecular mass PEO while retaining the dimensional integrity of a solid material. Attractive ionic conductivities of about 0.01 mS cm-1 are attained at room temperature without compromising mechanical properties. The electrolyte shows a wide electrochemical stability window and help in building a stable interface with lithium metal. Competitive performances are attained when integrating the developed materials into operational/functional prototype batteries highlighting the provided potential. This journal is © the Partner Organisations 2014.
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Rolland, J., Brassinne, J., Bourgeois, J.-P., Poggi, E., Vlad, A., & Gohy, J.-F. (2014). Chemically anchored liquid-PEO based block copolymer electrolytes for solid-state lithium-ion batteries. Journal of Materials Chemistry A, 2(30), 11839-11846. https://doi.org/10.1039/c4ta02327g (Original work published 2014)